This photograph of a Klamath Native American was taken in 1923 on the edge of Crater Lake in Oregon. For many, Crater Lake was a spiritual place and regarded as an "abode to the Great Spirit." Due to several unique factors, mainly that the lake has no inlets, the waters of Crater Lake are some of the purest in the world. During his visits with the Klamath, Curtis learned Crater Lake was used in vision quests, which often involved climbing the caldera walls and other dangers. Those who completed these quests were regarded as having more spiritual powers. Today, the Klamath continue to use Crater Lake for religious purposes and as a means of supporting life.